PaintTool SAI is a lightweight, yet high quality painting
application that has stacks of features. The application has
full digitizer support, including pressure sensitive
functions, anti-aliased drawing and highly accurate
composition with 16bit ARGB channels.

PaintTool SAI has a simple user interface that has
powerful features and functions. It is easy to learn and
fully supports Intel MMX Technology.

PaintTool SAI contains all the basic tools that you would
expect to find in a paint program; airbrushes, paintbrushes,
watercolors, pencils, and erasers. The application also lets
you flip, rotate, zoom and alter the colors, saturation and
hue of your images. Additionally, PaintTool SAI also has more
advanced features, such as layers and canvases, which add depth
to your images. PaintTool SAI also has some cools effects to play around with too.

Overall, PaintTool SAI is a great basic tool that has some
good extended features. If you are looking for something that
has basic functionality with some image enhancement tools,
then PaintTool SAI may be just what you are looking for.